Apparatus for producing artificial respiration.



, E. J.TYLER.

APPARATUSFOR PRODUCING ARTIFICIAL RESPIRATION. APPLICATION FILED SEPT. zo. 191s.

l,24?s,9O(JIo Patented om. 23, 1917.

E. l. TYLER.

Y APPARATUS FOR PRODUCING RTIFICIAL RESPIRATION.

APPLICATION man SEPT. 2o V1916.

' Patented oet. 1917.'

3 SHEETS-SHEET 2.

l, Patented Oct. 23

3 SHEETS-SHEETS..

E. J. TYLER. APPARATUS FOR PRODUCING ARTIFICIAL RESPIRATION. APPLICATION FILED-SEPT. 20. I9I6. 1,243,900.

narran srarns' rarnnr ernten.

EDM-UND l @new dem@ 'ILLINOIS- Arranri'rusronl rnoDUoIiTG Arti-iniciar gansrrnafrron.

I Specification of Letters Ifatent. i Patntd @613. 23, 1917.

Applicationdiled: September 20, .191116. Serial 110,121,135, i

To all ill/wm t may concern( i Be it known that .LEDMUND SJ-TYLER citizen of the United `States,residing inhif cago, in the countyeooolg Statefof Illinois, havey invented certain t new, and1 use-.

ful Improvements in Apparatus, orPro'duding Artificial Respiration, of .which ltheA jolie,

lowing is a speciication.

This invention relates `to apparatusVH forv producing articial respiration whereby gair; t or oxygen or mixtures thereof may be; forced.

into and carbonfdioxid or otherwasteprod ucts t withdrawn from o thelungs of a patient;t

the, purpose being to simulate L and `therelijy stimulate respiration Awhich vhas `ceasedhby reason'of asphyxiatio/nor other cause.

It is anobject oflmy invention toA provide anl apparatus which is. simple. inA consti-ucvk tion and easily operable by -relatively\un.

skilled persons, whereby the lungs of a pa-v tient may lbecaused, to assume. their normal function Awhere breathing has ceased but` life is not extinct.

A further object of my invention is the provision of an apparatus; having meansy to control the rhythm or speed of operation and thevolume and character of the oxygen-con.-

Other objects and advantages of my in.,-y

vention will be apparent asitisbetter understood by reference to the following speciication when read in connectionwiththeiaecompanying drawing, illustrating the` pre-,

ferred embodiment thereof, in which- Figurel is .av plan view of the apparatus;

Fig. 2 is a transverse section through ,thel

apparatus;

Fig. 3 isa section on the .line 3.-, 3 of Fig.2:

Fig. t is a detail in section ofthemixingV valve;

Fig. 5 is. a detail partiallyin section of the. mixing valve ;y

Fig. 6 is -a section. on the. lined-e64 yof Fg. 8)'v ishaY View.. in perspective of. the

plunger,coperatingwith the cylinder illus-4 y t'rated'inA Fig.,7;

Fig. 9mis a section .y on the lineQf-Qpof Figa y L i Fig. 10 is sectionv ointlieviliiie 10-1() ofl F ig.c 2;. and i F ig..11 islai'vsection onthe line 11-11 of Fig. t V

1 Referringto the Vdrawing', 1 ,indicatesa framektof which .theI foot plate .2.is Isecured and i upon which rods ,3 ,are mounted to sup-y port ,the `top plate 4L;P V A 'pressurelcylinder 5 anda vsuction cylinder are, respectively7` mounted between .the base 1 'and ythetop platemeand are provided with plungers A7 and Ei*connected'iby rods@ 'toV any operating handlel 1(1)` whereby the plungers. 7-v and 8 may be reciprocated intheir respective cyl-l inders.

The cylinder is provided with aninlet. 11 inwhiohfa ball. valve 12y is disposed and arranged to .seatwhen theplunger 7 `descendsr. The Ainlet 11 is connectedv by ya ductv 13 in the frame 1 to a pipe 14 (Fig. 2.) which isinfturn ,connected .to a mixing .valve l15 provided with anY inlet, 16 4 and 5) land an inlet.,17 adaptedy tobefl connected to a source of oxygen@ The valve 15 further comprises `a rotatable member 18 provided. with-an operating handle 19 and withuafplu.- rality of openings 20 of different sizes adaptI edto register .with the inlets 16 and 17. The openings 2Q are so. arranged that when the opening of :greatest diameter registers with one of. theinlets 16 or 17 the other inlet is, closed but when the. smaller openings` 2O register with the inlets leand 17 `their lcornf binedA cross-sectional i area .will substantially equal y.the cross-sectional area of one of the largest openings 20. 'In other words the areas :oi the regis ,teringy openings are.. inverselyproportional. to each other. Asuit-I able, scale,` indicating vvthe position of. the me1nber,18T is provided upon the facevo'f the valve.I 15 so thattheV operator mayreadily obtain ,any desired mixture of: oxygen and air. v

. Thecylinder, 5 `is provided with an outlet 21- (Fig. 9) in .which aball ;valve 22 isfdis-l posedand adapted, through the. actuation. of the i spring.y v 218 to close, .the outlet whenj thei plunger: 7 Vmoves upwardlyy in thev lcylinder.' The outlet 21 i is Aconneotedby I' a duc/t;` 2t-12Q.,a'. i1rlng'25 which' lfeceire's the .tube leading to, the ..inouth and nose .piece (not Stena) Tha-Cylinder 6.a, pterifldwithgr CJD an inlet 26 (Fig. 10) in which a ball valve 27 is disposed and arranged to close the inlet when the plunger 8 moves downwardly. rlhe inlet 26 is connected by a duct 28 to a coupling 29 to which the tube leading to the mouth and nose piece (not shown) is connected. |I`he cylinder 6 is provided with an outlet 29 (Fig. 11) in which a ball valve 30 is disposed and arranged to close the outlet under the actuation of the spring 31 when the plunger 8 moves upwardly.

From the foregoing it will be readily understood that upon each downward movement of the operating handle 10 oxygen-containing gas, in which the desired proportion of oxygen is present, is forced froml the cylinder 5 to the lungs of a patient and upon each upward movement of the operating handle 10 waste and other products willbe withdrawn from the lungs of a patient to the cylinder 6, being expelled therefrom through the outlet 29 upon the succeeding downward movement of the operating handle 10. Because of the delicate nature of the lungs it is desirable that the pressure exerted thereon when oxygen-containing gas is supplied thereto never exceed five ounces and that the suction exerted when waste products are withdrawn from the lungs never exceed four ounces. Accordingly I provide the plunger 7 with an opening 32 normally closed by a. valve 33 which is pressed into engagement with its seat by a spring 34. TWhen the plunger 7 moves downwardly the valve 33 will remain on its seat unless the pressure within the cylinder rises above five ounces in which event the valve 33 will be lifted against the spring 34 to allow the escape of a portion of the gas within the cylinder to the opposite side of the plunger 7. The plunger 8 is similarly provided with an opening 35 normally closed by a valve 36 which is maintained on its seat by a spring' 37 the valve 36 being, however, arranged to open when the suction exerted by the plunger S exceeds four ounces, whereupon air is admitted to the portion of the cylinder 6 below the plunger 3 to reduce the suction.

As persons of different ages have different lung capacities I provide means for adjustably limiting the effective capacity of the cylinders 5 and 6 which comprises an intermediate cylinder 38 inclosing a cylinder 39 provided with slots 40 of varying lengths. A plunger 41 having a lug 42 thereon is connected by a rod 43 to the operating handle 10 and is arranged to rotate in the cylinder 38 in order that the lug 42 may be selectively disposed to engage one or the other ofthe slots 40. A disk 44 is secured to the upperend of the rod 43 and is provided with a plurality of notches 45 adapted to be engaged by a latch 46 which locks the disk 44 and consequently the rod 43 and the plunger 41 in position to engage the desired slot 40. Obviously when the operating handle 10 moves upwardly the plunger 40 will be permitted to move upwardly until the lug 42 engages the end of the slot 40 in which it is disposed. Y e

In order to effectively carry out its desired purpose it is essential to an apparatus of this character that speed of operation be limited tok substantially equal the normal rate of breathing. To prevent too rapid operation of the apparatus I provide two auxiliaryV cylinders 47 (Fig. in which plungers 48 are disposed and connected by rods 49 to the operating handle 10. lThe cylinders 47 are connected by a duct 50 in which is disposed a rotatable valve 51 having an opening 52 of limited cross-sectional area. Obviously when the operating handlelO is moved upwardly the plungers 48 create a partialv vacuum which must be suppliedwith air through the restricted opening 52 and simi-y larly when the plungers 48 move downwardly the air must escape through the same restricted opening. By rotating the valve 51 the passage of air from the duct 50 to the outlet 52 may be adjusted so that'any desired speed of operation may be obtained. When so adjusted the valve 51 may be locked by screwing the'threaded clamping collarv 53 against the valve.

From the foregoing it will be apparent that I have perfected an apparatus for producing artificial respiration which may be so adjusted that regardless 0f theexperience or knowledge of the operator the patient cannot be injured and the possibility of reviving the patient is greatly increased. lilith `my apparatus a simple movement quickly adjusts the range of movement of the plungers 7 and 8 in accordance with the age of the patient and the proportion of oxygen contained in the gas supplied to the lungs. The speed of operation of the apparatus and the suction and pressure exerted thereby is automatically 'regulated and requires no attention after the primary adjustment. The latter features assure against injury ofthe patient. y

It will be apparent that various changes may be made in the form, construction and arrangement of the parts without departing from the spirit and scope of the invention, or sacrificing any of its material advantages, the form hereinbefore described being merely alpreferred embodiment thereof.

I claim: l

1. In an apparatus of the character described, the combination of topV and bottom plates, rods connecting said plates, live cylinders supported between said plates, four of said cylinders being arranged symmetrically about the fifth, plungers in each of said cylinders, an operating handle, means connecting said handle and plungers, outlets from saidinlets to twoof: said symmetrically arranged: cylinders, automatically operable valves ini'said `inlets and. outlets, a duct connectingthe other twomsymmetrically ar-l ranged cylinders, and an: adjustable yvalve in,

said `duct having a restricted. opening communicating with the atmosphere;

2.- Infan Yapparatusfol .the character de-..

scribed, the combinationiofitop and bottom plates, rods connecting said plates, five cylinders supported between said plates, four or' said cylinders being arranged-symmetrically about the fifth, plungersv in each'of said cylinders, an operating handle, means connecting said handle and plungers, outlets from and inlets to two of sai'dfsymmetri'- cally arranged cylinders, automatically o erw able valves in said inlets and outlets, a cuct connecting the other two symmetrically arranged cylinders, an adjustable valve in said duct having a restricted opening communieating with the atmosphere, and means in said fifth cylinder to selectively limit the stroke of said plungers.

3. In an apparatus of the character described, the combination of a pair of cylinders, an inlet to and an outlet from each of said cylinders, valves in said inlets and outlets, a plunger in each of said cylinders, means for actuating said plungers whereby oxygen-containing gas and waste and other products are alternately supplied to andsaid cylinders, valves in said inlets and outf lets, a plunger in each of said cylinders, means for actuating said plungers whereby oxygen-containing gas and waste and other products are alternately supplied to and withdrawn from the lungs of a patient, means for adjustably limiting the movement of said plungers including an intermediate cylinder, the walls of which are provided with slots of varying depth, a rotatable plunger having a lug thereon adapted to selectively center one of said slots, and means connecting said plunger' to said actuating means, and means for locking said plunger against rotation when adjusted to engage one of said slots.

5. In an apparatus of the character described, the combination ci a pair of cylinders, an inlet to and an outlet from each of said cylinders, valves in said inlets and outlets, a plunger in each of said cylinders,

1neans..for actuating said` plungers whereby oxygen-.containing :gas and waste and, .other products. r are f i alternately if supplied to and withdrawn-from the lungs of a patient, means for adjustably i limiting: the Amovement of 'said plungersy including an intermediatey cylinder,y they walls` of which are provided-v with slots-of varying depth, a rotatableplunger having-a lug thereonv adapt.- ed!to;sele'ctively:center one of said slots,I and means connecting said plunger toy said actu+.4 ating means, andv means yfor preventing; the Y actuation ofV said plungers `beyond.y a predetenmined :ratefof speed. r

k6. In an apparatus of the character described,- the-'combination otwolv pairs of lsymmetrically arranged cylinders, the respective cylinders of each pair being oppositely disposed, plungers in each of said cylinders, rods connected to said plungers and to a common operating handle, outlets' from and inlets to the cylinders of one of said pairs, valves in said outlets and inlets, a duct connecting the other pair of cylinders, and a valve in said duct having a restricted opening communicating with the atmosphere.

7. In an apparatus of the character described, the combination of two pairs of symmetrically arranged cylinders,the respective cylinders of each pair being oppositely disposed, plungers in each of said cylinders, rods connected to said plungers and to a common operating handle, outlets from and inlets to the cylinders of one of said pairs, valves in said outlets and inlets, means for preventing the pressure or suction exerted by said cylinders from Vexceeding a predetermined limit, a duct connecting the other pair of cylinders, and a valve in said duct having a restricted opening communicating with the atmosphere.

8. In an apparatus of the character described, the combination of two pairs of symmetrically arranged cylinders, the respective cylinders of each pair being oppositely disposed, plungers in each of said cylinders, rods connected to said plungers and to a common operating handle, outlets from and inlets to the cylinders of one of said pairs, valves in said outlets and inlets,

a mixing valve connected to the inlet to one of said cylinders, a duct connecting the other pair of cylinders, and a valve in said duct having a restricted opening communicating with the atmosphere.

9. In an apparatus of the character described, the combination of two pairs of symmetrically arranged cylinders, the respective cylinders of each pair being oppositely disposed, plungers in each of said cylinders, rods connected to said plungers and to a common operating handle, outlets from and inlets to the cylinders of one of said pairs, valves in said outlets and inlets,

a mixing valve connected to the inlet to one of said cylinders, a duct connecting the other pair of cylinders, a valve in said duct having a restricted opening,` communicating With the atmosphere, and means to selectively limit the stroke of said plungers.

10. In an apparatus of t-he character described, the combination of two pairs of symmetrically arranged cylinders, the respective cylinders of each pair being oppositely disposed, plungers in each of said cylinders, rods connected to said plungers and to a common operating handle, outlets from and inlets to the cylinders of one of said pairs, valves in said outlets and inlets, a mixing valve connect-ed t0 the inlet to one of said cylinders, a duct connecting the other pair of cylinders, a valve in said duct having a restricted opening communicating with the atmosphere, a lifth cylinder, and means in said cylinder connected to said operating handle to selectively limit the stroke of said plungers.

EDMUN D J. TYLER. Witnesses: 1

WM. O. BELT, M. A. KIDDm.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

